Since this update brought a bunch of new mechanics I thought it may be helpfull to gather and share some tips, tricks and other informative stuff in one place. Naturally this will contain minor spoilers, so if you haven't done the Second Dream quest proceed at your own risk, you have been warned:

AGGP video explaining the new focs mechanic:

Some nice demonstrations of the solo puzzles of the new moon tile set can be found on this yt channel: Onlybecauseilikeyou